CN119195880B - Oil-gas separator control method, device, equipment and storage medium - Google Patents
Oil-gas separator control method, device, equipment and storage mediumInfo
- Publication number
- CN119195880B CN119195880B CN202411217570.6A CN202411217570A CN119195880B CN 119195880 B CN119195880 B CN 119195880B CN 202411217570 A CN202411217570 A CN 202411217570A CN 119195880 B CN119195880 B CN 119195880B
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- Prior art keywords
- oil
- engine
- gas separator
- temperature value
- rotation speed
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0077—Engine parameters used for crankcase breather systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M2013/0077—Engine parameters used for crankcase breather systems
- F01M2013/0083—Crankcase pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
本申请涉及车辆技术领域，提供了一种油气分离器控制方法、装置、设备及存储介质。该方法包括：实时采集发动机运行时的机油温度值与曲轴箱压力值；当机油温度值不低于设定温度值，且曲轴箱压力值大于设定压力值时，基于曲轴箱压力值关联的第一控制参数与油气分离器的电机转速最大值，动态控制所述油气分离器的电机转速；当机油温度值不低于设定温度值，且曲轴箱压力值不大于设定压力值时，基于发动机转速、扭矩关联的第二控制参数与油气分离器的电机转速最大值，动态控制油气分离器的电机转速。在保证油气分离效率的前提下，适时降低电机转速，最大程度减少电机运行时间，以提高电机可靠性，进而延长油气分离器的电机使用寿命。
The present application relates to the field of vehicle technology and provides an oil-gas separator control method, device, equipment, and storage medium. The method includes: real-time acquisition of engine oil temperature and crankcase pressure values during engine operation; when the engine oil temperature is not lower than a set temperature value and the crankcase pressure is greater than the set pressure value, dynamically controlling the oil-gas separator motor speed based on a first control parameter associated with the crankcase pressure value and the maximum oil-gas separator motor speed; and when the engine oil temperature is not lower than the set temperature value and the crankcase pressure is not greater than the set pressure value, dynamically controlling the oil-gas separator motor speed based on a second control parameter associated with engine speed and torque and the maximum oil-gas separator motor speed. While ensuring oil-gas separation efficiency, the motor speed is appropriately reduced to minimize motor operating time, thereby improving motor reliability and extending the service life of the oil-gas separator motor.
Description
Technical Field
The application relates to the technical field of vehicles, and provides a method, a device and equipment for controlling an oil-gas separator and a storage medium.
Background
During diesel combustion, part of the gas leaks into the crankcase from the gap between the piston, piston ring and cylinder liner, a phenomenon known as crankcase blow-by. The gas mainly consists of two parts, one part is particulate matters generated during combustion of the diesel engine, the other part is a large amount of oil mist generated after engine oil sprayed out from a piston cooling nozzle impacts a piston during the operation of the diesel engine, and the oil mist is generated by oil pan engine oil under the stirring of a crankshaft, and the oil mist is used as unburned engine oil. And may leak into the crankcase with the clearance of the vehicle structure.
The air pollution can be caused by directly discharging the gas into the atmosphere, and in order to meet the requirement on the quantity of gas particles in relevant regulations, the air pollution caused by the emission of automobile exhaust is reduced, and the ratio of unburned engine oil to particles in an oil-gas mixture in a crankcase is reduced by using an oil-gas separator.
For the electric-driven oil-gas separator, the higher the motor rotating speed is, the smaller the ratio of unburned engine oil to particulate matters in the separated oil-gas mixture is, but the higher the motor continuously maintains, and the reliability of the motor is reduced. Therefore, how to balance the oil-gas separation efficiency and the motor reliability becomes a current urgent problem to be solved.
Disclosure of Invention
The embodiment of the application provides a control method, a device, equipment and a storage medium for an oil-gas separator, which are used for solving the problem of how to improve the service life of a motor on the premise of ensuring the oil-gas separation efficiency.
In a first aspect, an embodiment of the present application provides a method for controlling an oil-gas separator, including:
Collecting an engine oil temperature value and a crankcase pressure value when an engine runs in real time;
when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is higher than the set pressure value, dynamically controlling the motor rotation speed of the oil-gas separator based on a first control parameter related to the crankcase pressure value and a maximum value of the motor rotation speed of the oil-gas separator;
And when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is not greater than a set pressure value, dynamically controlling the motor rotation speed of the oil-gas separator based on the second control parameter related to the engine rotation speed and the torque and the maximum value of the motor rotation speed of the oil-gas separator.
Optionally, after collecting the engine oil temperature value and the crankcase pressure value in real time when the engine is running, the method further comprises:
And when the engine oil temperature value is lower than a set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
Optionally, when no crankcase pressure sensor is mounted on the engine, the method further comprises:
acquiring an engine oil temperature value and a vehicle driving mileage when the engine runs in real time;
when the engine oil temperature value is not lower than a set temperature value and the vehicle driving mileage is greater than a set mileage, adjusting the motor rotation speed of the oil-gas separator to a maximum motor rotation speed;
and when the engine oil temperature value is not lower than a set temperature value and the vehicle driving mileage is not greater than a set mileage number, dynamically controlling the motor speed of the oil-gas separator based on the second control parameter related to the engine speed and the torque and the maximum value of the motor speed of the oil-gas separator.
Optionally, after acquiring the engine oil temperature value and the vehicle driving mileage in real time when the engine is running, the method further includes:
And when the engine oil temperature value is lower than a set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
In a second aspect, an embodiment of the present application further provides an oil-gas separator control device, including:
The acquisition unit is used for acquiring an engine oil temperature value and a crankcase pressure value in real time when the engine runs;
The control unit is used for dynamically controlling the motor rotation speed of the oil-gas separator based on a first control parameter related to the crankcase pressure value and the maximum value of the motor rotation speed of the oil-gas separator when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is higher than the set pressure value;
And when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is not greater than a set pressure value, dynamically controlling the motor rotation speed of the oil-gas separator based on the second control parameter related to the engine rotation speed and the torque and the maximum value of the motor rotation speed of the oil-gas separator.
Optionally, after collecting the engine oil temperature value and the crankcase pressure value in real time when the engine is running, the control unit is further configured to:
And when the engine oil temperature value is lower than a set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
Optionally, when the crankcase pressure sensor is not mounted on the engine, the oil-gas separator control device further includes:
The acquisition unit is used for acquiring the engine oil temperature value and the vehicle driving mileage in real time when the engine runs;
The control unit is used for adjusting the motor rotation speed of the oil-gas separator to the maximum motor rotation speed when the engine oil temperature value is not lower than a set temperature value and the vehicle driving mileage is greater than a set mileage;
and when the engine oil temperature value is not lower than a set temperature value and the vehicle driving mileage is not greater than a set mileage number, dynamically controlling the motor speed of the oil-gas separator based on the second control parameter related to the engine speed and the torque and the maximum value of the motor speed of the oil-gas separator.
Optionally, after acquiring the engine oil temperature value and the vehicle driving mileage in real time when the engine is running, the control unit is configured to:
And when the engine oil temperature value is lower than a set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
In a third aspect, an embodiment of the present application further provides a diesel engine, which includes an electronic control unit, an engine, a crankcase, and an oil-gas separator, where when the engine runs, the electronic control unit executes a step of any one of the above-mentioned oil-gas separator control methods, dynamically controls a motor rotation speed of the oil-gas separator, and separates gas in the crankcase according to the adjusted motor rotation speed.
In a fourth aspect, an embodiment of the present application further provides a computer readable storage medium, which includes program code for causing a computer device to execute the steps of any one of the above-mentioned oil-gas separator control methods, when the program product is run on the computer device.
The application has the following beneficial effects:
The embodiment of the application provides a method, a device, equipment and a storage medium for controlling an oil-gas separator, wherein the method comprises the steps of collecting an engine oil temperature value and a crankcase pressure value when an engine runs in real time; and when the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is not higher than the set pressure value, dynamically controlling the motor speed of the oil-gas separator based on the first control parameter related to the crankcase pressure value and the maximum value of the motor speed of the oil-gas separator.
According to the engine oil temperature value and the crankcase pressure value during the operation of the engine, the motor rotating speed of the oil-gas separator is dynamically controlled. On the premise of ensuring the oil-gas separation efficiency, the rotating speed of the motor is timely reduced, the running time of the motor is reduced to the greatest extent, the reliability of the motor is improved, and the service life of the motor of the oil-gas separator is prolonged.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1A is a schematic flow chart of an oil-gas separator according to an embodiment of the present application;
FIG. 1B is a schematic diagram of connection between an oil-gas separator and an engine according to an embodiment of the present application;
FIG. 1C is a schematic diagram of a change trend between a cold PN instantaneous value and the rotation speed of an oil-gas separator provided by the embodiment of the application;
FIG. 1D is a schematic diagram of the control of an oil-gas separator based on an oil temperature value and a crankcase pressure value according to an embodiment of the application;
fig. 2A is a schematic flow chart of controlling an oil-gas separator based on an engine oil temperature value and a vehicle driving mileage according to an embodiment of the present application;
FIG. 2B is a schematic diagram of the control of the oil-gas separator based on the vehicle mileage and the crankcase pressure value according to the embodiment of the application;
fig. 3 is a schematic structural diagram of a control device for an oil-gas separator according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a computer device according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a computing device according to an embodiment of the application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the technical solutions of the present application, but not all embodiments. All other embodiments, based on the embodiments described in the present document, which can be obtained by a person skilled in the art without any creative effort, are within the scope of protection of the technical solutions of the present application.
Some terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.
1. The crankcase is positioned at the lower part of the cylinder body and mainly used for containing and storing engine oil and providing a mounting space for a crankshaft. The crankcase forms part of the engine lubrication system, ensuring that the oil circulates therein, providing the necessary lubrication and cooling of the moving parts of the engine.
The crankshaft is one of the important components in the engine, and is connected with a connecting rod to convert the reciprocating linear motion of a piston into rotary motion, so as to drive a transmission system.
In short, the crankshaft is a movable component responsible for converting energy into form, while the crankcase is a static structure that provides a mounting environment for the crankshaft and other components and maintains oil circulation and pressure balance within the engine.
2. The oil-gas separator is generally arranged at the position of a crankcase breathing port or an exhaust pipe of the engine and is used for separating unburned engine oil and particulate matters in an oil-gas mixture of the crankcase, so that the discharge amount of the unburned engine oil and the particulate matters discharged from the crankcase breathing port to the outside of the engine is reduced.
3. An electronic control unit (Electronic Control Unit, ECU) is a core on-board computer system responsible for managing and controlling the various electronic systems and components of the vehicle. The main functions of the system comprise data acquisition and processing, engine management, fault diagnosis, driving auxiliary control and the like.
4. Working conditions refer to working conditions of equipment, systems or industrial processes under specific conditions. In many fields of automotive engineering, machine manufacturing, electrical systems, etc., operating conditions typically relate to various parameters during operation, such as load size, speed, ambient temperature, pressure, etc. The working condition is known and analyzed to be important in the aspects of performance evaluation, optimal design, fault diagnosis, energy conservation, emission reduction and the like. For example, in discussing an automobile engine, different operating conditions may refer to engine performance and efficiency under different operating conditions such as idle, full speed, hill climbing, etc.
5. The oil-gas separation efficiency is the ratio of the amount of particles of the oil-gas mixture after separation in the crankcase to the amount of particles of the oil-gas mixture before separation in the crankcase.
6. Particle Number (PN) the amount of particulate matter in the engine exhaust, which includes the mixture of oil and gas leaking from the crankcase.
The following briefly describes the design concept of the embodiment of the present application:
During diesel combustion, part of the gas leaks into the crankcase from the gap between the piston, piston ring and cylinder liner, a phenomenon known as crankcase blow-by. The gas mainly consists of two parts, one part is particulate matters generated during combustion of the diesel engine, the other part is a large amount of oil mist generated after engine oil sprayed out from a piston cooling nozzle impacts a piston during the operation of the diesel engine, and the oil mist is generated by oil pan engine oil under the stirring of a crankshaft, and the oil mist is used as unburned engine oil. And may leak into the crankcase with the clearance of the vehicle structure.
The air pollution can be caused by directly discharging the gas into the atmosphere, and in order to meet the requirement on the quantity of gas particles in relevant regulations, the air pollution caused by the emission of automobile exhaust is reduced, and the ratio of unburned engine oil to particles in an oil-gas mixture in a crankcase is reduced by using an oil-gas separator.
For the electric-driven oil-gas separator, the higher the motor rotating speed is, the smaller the ratio of unburned engine oil to particulate matters in the separated oil-gas mixture is, but the higher the motor continuously maintains, and the reliability of the motor is reduced. Therefore, how to balance the oil-gas separation efficiency and the motor reliability becomes a current urgent problem to be solved.
In view of the above, the embodiment of the application provides a method, a device, equipment and a storage medium for controlling an oil-gas separator. The method specifically comprises the steps of collecting an engine oil temperature value and a crankcase pressure value in real time when an engine runs, dynamically controlling the motor rotation speed of the oil-gas separator based on a first control parameter related to the crankcase pressure value and the maximum motor rotation speed of the oil-gas separator when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is greater than the set pressure value, and dynamically controlling the motor rotation speed of the oil-gas separator based on the engine rotation speed, a second control parameter related to torque and the maximum motor rotation speed of the oil-gas separator when the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is not greater than the set pressure value.
According to the engine oil temperature value and the crankcase pressure value during the operation of the engine, the motor rotating speed of the oil-gas separator is dynamically controlled. On the premise of ensuring the oil-gas separation efficiency, the rotating speed of the motor is timely reduced, the running time of the motor is reduced to the greatest extent, the reliability of the motor is improved, and the service life of the motor of the oil-gas separator is prolonged.
The preferred embodiments of the present application will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are for illustration and explanation only, and not for limitation of the present application, and embodiments of the present application and features of the embodiments may be combined with each other without conflict.
In combination with the flow chart shown in fig. 1A, how to dynamically control the motor speed of the oil separator according to the engine oil temperature value and the crankcase pressure value during the operation of the engine is specifically described.
And S101, collecting an engine oil temperature value and a crankcase pressure value when the engine runs in real time.
As shown in fig. 1B, the inlet of the oil-gas separator is connected with the crankcase of the engine, the oil-gas mixture in the crankcase enters the oil-gas separator through the oil inlet pipeline, and larger oil drops in the oil-gas mixture are thrown out under the action of centrifugal force, and are deposited at the bottom of the oil-gas separator under the action of gravity and discharged through the oil discharge pipeline. Meanwhile, the electric-driven oil-gas separator also adopts an electrostatic field technology, oil drops in the oil-gas mixture are charged through a high-voltage electric field in the separator, and the charged oil drops are attracted to an oil collecting plate or a pipe wall under the action of the electric field force, so that a higher efficient separation effect is realized.
A crankcase pressure sensor for detecting a pressure state in the crankcase is provided in the crankcase or on the exhaust pipe. This pressure data is important because it indirectly reflects the operating conditions of the crankcase ventilation system, helping to determine if there are excessive crankcase blow-by or oil vapor accumulation, etc. Abnormal crankcase pressure values may indicate poor sealing, crankcase ventilation valve failure, or other conditions that result in pressure imbalance, and timely monitoring of such parameters helps to prevent engine damage, ensuring proper engine operation.
An engine oil temperature sensor for detecting the temperature of engine oil is provided on the engine. This data is also important because the viscosity of the oil changes with temperature, affecting its lubrication, and too high or too low an oil temperature may cause damage to the engine. When the oil temperature is too high, the oil may become too thin, reducing its lubricating ability and increasing the risk of engine component wear. Conversely, too low a temperature of the engine oil may cause the engine oil to be too viscous, increasing resistance at the start of the engine, and internal friction at the time of operation.
The electronic control unit can timely adjust the working state of the cooling system, the engine oil circulation strategy or warn a driver through the feedback information of the engine oil temperature sensor, so that the engine is ensured to work in an optimal engine oil temperature range, the engine is protected from being damaged, and the optimal performance is maintained.
The electronic control unit is respectively connected with the oil-gas separator, the crankcase pressure sensor and the engine oil temperature sensor, and the engine oil temperature value and the crankcase pressure value during the operation of the engine are collected in real time through the sensor components, so that the motor rotating speed of the oil-gas separator is dynamically controlled based on the engine oil temperature value and the crankcase pressure value, the motor rotating speed is timely reduced on the premise of ensuring the oil-gas separation efficiency, the motor running time is reduced to the greatest extent, the motor reliability is improved, and the service life of the motor of the oil-gas separator is further prolonged.
And S102, dynamically controlling the motor speed of the oil-gas separator based on a first control parameter related to the crankcase pressure value and the maximum value of the motor speed of the oil-gas separator when the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is higher than the set pressure value, and dynamically controlling the motor speed of the oil-gas separator based on a second control parameter related to the engine speed and the torque and the maximum value of the motor speed of the oil-gas separator when the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is not higher than the set pressure value.
Fig. 1C shows the relationship between the PN of the crankcase oil-gas mixture separated by the oil-gas separator and the motor rotation speed of the oil-gas separator, when the driving modes of the oil-gas separator are respectively oil driving (oil driving for short) and motor driving (electric driving for short), the motor rotation speed of the electric driving type oil-gas separator can be kept constant, the motor rotation speed of the oil driving type oil-gas separator is changed along with the working condition of the engine, but the PN change trend of the two driving modes is consistent, and only the peak values are different, so that the motor of the oil-gas separator does not need to be kept at a higher rotation speed all the time, and the PN control can be realized.
As shown in fig. 1D, in step 102, the motor rotation speed of the oil-gas separator is set appropriately in each case.
(1) When the engine oil temperature value is not lower than the set temperature value T and the crankcase pressure value is higher than the set pressure value P, the motor rotation speed of the oil-gas separator is set to be the product k 1*Nmax of the first control parameter k 1 and the motor rotation speed maximum value N max. The method comprises the steps of obtaining a first mapping relation between a crankcase pressure value and a first control parameter, matching the collected crankcase pressure value with the mapping relation, and taking the first control parameter corresponding to the successfully matched crankcase pressure value in the first mapping relation as the control parameter for adjusting the rotating speed of the motor.
For example, through experimental calibration, a first mapping relationship between the crankcase pressure value and the first control parameter shown in table 1 is obtained, and it can be seen from the table that the first control parameter is positively correlated with the crankcase pressure state, that is, as the crankcase pressure value increases, the first control parameter increases, and the adjusted motor rotation speed is also faster, so as to ensure the oil-gas separation efficiency of the oil-gas separator. However, when the oil-gas separator is applied to different engines, the first mapping relation between the crankcase pressure value and the first control parameter, the set pressure value and the set temperature value can be changed through a test calibration mode.
TABLE 1
(2) When the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is not greater than the set pressure value, the motor speed of the oil-gas separator is set to be the product k 2*Nmax of the second control parameter k 2 and the motor speed maximum value N max of the oil-gas separator. And acquiring a second mapping relation between the engine speed and the torque and a second control parameter, matching the acquired engine speed and torque with the second mapping relation, and taking the second control parameter corresponding to the successfully matched engine speed and torque in the second mapping relation as the control parameter for adjusting the motor speed.
For example, through test calibration, a second mapping relation between the engine speed and the torque and a second control parameter shown in table 2 is obtained, and it can be seen from the table that the second control parameter is determined by the engine speed and the torque, the second control parameter is in a stepwise increasing trend, when the engine speed and the torque are increased, a larger second control parameter is set, and the motor speed is adjusted to a higher speed, so as to ensure the oil-gas separation efficiency of the oil-gas separator. However, when the oil-gas separator is applied to different engines, the second mapping relation between the engine rotating speed and torque and the second control parameter, the set pressure value and the set temperature value can be changed through a test calibration mode.
TABLE 2
(3) And when the engine oil temperature value is lower than the set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
When the engine oil temperature value is lower than the set temperature value, the engine is in a cold start state, the gap between the piston ring and the cylinder sleeve is larger, the crankcase air leakage is higher, the motor rotation speed of the oil-gas separator is adjusted to the maximum motor rotation speed, the quantity of particles in the oil-gas mixture is favorably separated to be within a specified value, the air pollution caused by the emission of automobile exhaust is reduced, and the oil-gas separation efficiency of the oil-gas separator is ensured.
Some engines may not have a crankcase pressure sensor mounted thereon. Under the condition that a crankcase pressure sensor is not arranged on an engine, aiming at the problem of increasing crankcase air leakage caused by four matched wearing when the engine runs, the application dynamically controls the motor rotating speed of the oil-gas separator according to the engine oil temperature value and the vehicle driving mileage when the engine runs. On the premise of ensuring the oil-gas separation efficiency, the rotating speed of the motor is timely reduced, the running time of the motor is reduced to the greatest extent, the reliability of the motor is improved, and the service life of the motor of the oil-gas separator is prolonged.
In combination with the flow chart shown in fig. 2A, how to dynamically control the motor speed of the oil-gas separator according to the engine oil temperature value and the vehicle mileage during the operation of the engine will be described.
S201, acquiring an engine oil temperature value and a vehicle driving mileage when an engine runs in real time.
The electronic control unit collects the engine oil temperature value when the engine runs and the electric signal generated when the wheels rotate in real time through an engine oil temperature sensor arranged on the engine and a vehicle speed sensor arranged near the gearbox, the driving shaft or the wheels.
When the wheels rotate, the vehicle speed sensor can generate corresponding electric signals, and the frequency of the electric signals is in direct proportion to the rotation speed of the wheels. The electrical signals are transmitted to an electronic control unit, and a special circuit and a program are arranged in the electronic control unit, so that the electrical signals can be read and converted into specific vehicle speed data, and the vehicle mileage during the operation of the engine is obtained.
And S202, when the engine oil temperature value is not lower than the set temperature value and the vehicle driving distance is not higher than the set mileage, adjusting the motor rotation speed of the oil-gas separator to the maximum motor rotation speed, and when the engine oil temperature value is not lower than the set temperature value and the vehicle driving distance is not higher than the set mileage, dynamically controlling the motor rotation speed of the oil-gas separator based on the second control parameter related to the engine rotation speed and the torque and the maximum motor rotation speed of the oil-gas separator.
As shown in fig. 2B, in step 202, the motor rotation speed of the oil separator is dynamically controlled in each case.
(1) And when the engine oil temperature value is not lower than the set temperature value T and the vehicle driving mileage is greater than the set mileage number L, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed. However, when the oil-gas separator is applied to different engines, the set mileage can be changed through a test calibration mode. For example, the mileage of the vehicle when the crankcase ventilation reaches 1.5 times of the calibration is taken as the set mileage of the present application.
(2) When the engine oil temperature value is not lower than the set temperature value and the vehicle driving mileage is not greater than the set mileage, the motor speed of the oil-gas separator is set to be the product k 2*Nmax of the second control parameter k 2 and the maximum motor speed N max of the oil-gas separator. And acquiring a second mapping relation between the engine speed and the torque and a second control parameter, matching the acquired engine speed and torque with the second mapping relation, and taking the second control parameter corresponding to the successfully matched engine speed and torque in the second mapping relation as the control parameter for adjusting the motor speed.
(3) And when the engine oil temperature value is lower than the set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
When the engine oil temperature value is lower than the set temperature value, the engine is in a cold start state, the gap between the piston ring and the cylinder sleeve is larger, the crankcase air leakage is higher, the motor rotation speed of the oil-gas separator is adjusted to the maximum motor rotation speed, the quantity of particles in the oil-gas mixture is favorably separated to be within a specified value, the air pollution caused by the emission of automobile exhaust is reduced, and the oil-gas separation efficiency of the oil-gas separator is ensured.
The application increases the requirement of controlling the motor speed based on the engine oil temperature value, and reasonably sets the motor speed of the oil-gas separator according to the crankcase pressure and the engine working condition when the engine is running. On the premise of ensuring the oil-gas separation efficiency, the rotating speed of the motor is timely reduced, the running time of the motor is reduced to the greatest extent, the reliability of the motor is improved, and the service life of the motor of the oil-gas separator is prolonged.
In addition, under the condition that a crankcase pressure sensor is not arranged on the engine, the application can dynamically control the motor rotating speed of the oil-gas separator according to the engine oil temperature value and the vehicle driving mileage when the engine is in operation and aims at the problem that the crankcase air leakage is increased due to four matched abrasion when the engine is in operation. On the premise of ensuring the oil-gas separation efficiency, the rotating speed of the motor is timely reduced, the running time of the motor is reduced to the greatest extent, the reliability of the motor is improved, and the service life of the motor of the oil-gas separator is prolonged.
Based on the same inventive concept as the method embodiment, the embodiment of the application also provides a schematic structure diagram of the oil-gas separator control device. As shown in fig. 3, the oil separator control device 300 may include:
The acquisition unit 301 is used for acquiring an engine oil temperature value and a crankcase pressure value in real time when the engine runs;
a control unit 302, configured to dynamically control a motor rotation speed of the oil-gas separator based on a first control parameter associated with the crankcase pressure value and a maximum value of the motor rotation speed of the oil-gas separator when the oil temperature value is not lower than the set temperature value and the crankcase pressure value is greater than the set pressure value;
And when the engine oil temperature value is not lower than the set temperature value and the crankcase pressure value is not greater than the set pressure value, dynamically controlling the motor speed of the oil-gas separator based on the maximum value of the motor speed of the oil-gas separator and the second control parameter related to the engine speed and the torque.
Optionally, after collecting the engine oil temperature value and the crankcase pressure value during the operation of the engine in real time, the control unit 302 is further configured to:
And when the engine oil temperature value is lower than the set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
Optionally, when the crankcase pressure sensor is not mounted on the engine, the oil separator control device 300 further includes:
the acquisition unit 301 is used for acquiring an engine oil temperature value and a vehicle driving mileage in real time when the engine is running;
A control unit 302, configured to adjust the motor rotation speed of the oil separator to a maximum motor rotation speed when the engine oil temperature value is not lower than the set temperature value and the vehicle driving distance is greater than the set mileage;
And when the engine oil temperature value is not lower than the set temperature value and the vehicle driving mileage is not greater than the set mileage, dynamically controlling the motor speed of the oil-gas separator based on the maximum value of the motor speed of the oil-gas separator and the second control parameter related to the engine speed and the torque.
Optionally, after acquiring the engine oil temperature value and the vehicle mileage during the engine operation in real time, the control unit 302 is configured to:
And when the engine oil temperature value is lower than the set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
Having described the method and apparatus for controlling the oil-gas separator according to the exemplary embodiment of the present application, next, a diesel engine according to another exemplary embodiment of the present application will be described.
Those skilled in the art will appreciate that the various aspects of the application may be implemented as a system, method, or program product. Accordingly, aspects of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects that may be referred to herein collectively as a "circuit," module "or" system.
Based on the same inventive concept as the above-mentioned method embodiment, the embodiment of the present application further provides a diesel engine, and referring to fig. 4, the diesel engine 400 may at least include an electronic control unit 401, an engine 402, a crankcase 403, and an oil-gas separator 404, where, when the engine 402 is running, the electronic control unit 401 performs any one of the steps of the oil-gas separator control method described above, dynamically controls the motor rotation speed of the oil-gas separator 404, and separates the gas in the crankcase 403 according to the adjusted motor rotation speed. For example, the electronic control unit 401 may perform the steps as shown in fig. 1A or fig. 2A.
A computing device 500 according to such an embodiment of the application is described below with reference to fig. 5. The computing device 500 of fig. 5 is only one example and should not be taken as limiting the functionality and scope of use of embodiments of the application.
As shown in fig. 5, computing device 500 is in the form of a general purpose computing device. The components of computing device 500 may include, but are not limited to, at least one processing unit 501 described above, at least one memory unit 502 described above, and a bus 503 that connects the various system components, including memory unit 502 and processing unit 501.
Bus 503 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, and a local bus using any of a variety of bus architectures.
The storage unit 502 may include readable media in the form of volatile memory, such as Random Access Memory (RAM) 5021 and/or cache storage unit 5022, and may further include Read Only Memory (ROM) 5023.
The storage unit 502 may also include a program/utility 5025 having a set (at least one) of program modules 5024, such program modules 5024 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
The computing device 500 may also communicate with one or more external devices 504 (e.g., keyboard, pointing device, etc.), one or more devices that enable a user to interact with the computing device 500, and/or any devices (e.g., routers, modems, etc.) that enable the computing device 500 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 505. Moreover, computing device 500 may also communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 506. As shown, network adapter 506 communicates with other modules for computing device 500 over bus 503. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with computing apparatus 500, including, but not limited to, microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
Based on the same inventive concept as the above-described method embodiments, aspects of the oil-gas separator control method provided by the present application may also be implemented in the form of a program product, which includes program code for causing a computer device to perform the steps in the oil-gas separator control method according to various exemplary embodiments of the present application described above, when the program product is run on the computer device, for example, the electronic device may perform the steps as shown in fig. 1A or fig. 2A.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of a readable storage medium include an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. An oil-gas separator control method, characterized by comprising:
Collecting an engine oil temperature value and a crankcase pressure value when an engine runs in real time;
when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is higher than the set pressure value, dynamically controlling the motor rotation speed of the oil-gas separator based on a first control parameter related to the crankcase pressure value and a maximum value of the motor rotation speed of the oil-gas separator;
And when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is not greater than a set pressure value, dynamically controlling the motor rotation speed of the oil-gas separator based on the second control parameter related to the engine rotation speed and the torque and the maximum value of the motor rotation speed of the oil-gas separator.
2. The method of claim 1, wherein after collecting the engine oil temperature value and the crankcase pressure value in real time while the engine is running, the method further comprises:
And when the engine oil temperature value is lower than a set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
3. The method of claim 1, wherein when no crankcase pressure sensor is mounted on the engine, the method further comprises:
acquiring an engine oil temperature value and a vehicle driving mileage when the engine runs in real time;
when the engine oil temperature value is not lower than a set temperature value and the vehicle driving mileage is greater than a set mileage, adjusting the motor rotation speed of the oil-gas separator to a maximum motor rotation speed;
and when the engine oil temperature value is not lower than a set temperature value and the vehicle driving mileage is not greater than a set mileage number, dynamically controlling the motor speed of the oil-gas separator based on the second control parameter related to the engine speed and the torque and the maximum value of the motor speed of the oil-gas separator.
4. The method of claim 3, wherein after acquiring the engine oil temperature value and the vehicle range while the engine is running in real time, the method further comprises:
And when the engine oil temperature value is lower than a set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
5. An oil-gas separator control device, characterized by comprising:
The acquisition unit is used for acquiring an engine oil temperature value and a crankcase pressure value in real time when the engine runs;
The control unit is used for dynamically controlling the motor rotation speed of the oil-gas separator based on a first control parameter related to the crankcase pressure value and the maximum value of the motor rotation speed of the oil-gas separator when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is higher than the set pressure value;
And when the engine oil temperature value is not lower than a set temperature value and the crankcase pressure value is not greater than a set pressure value, dynamically controlling the motor rotation speed of the oil-gas separator based on the second control parameter related to the engine rotation speed and the torque and the maximum value of the motor rotation speed of the oil-gas separator.
6. The apparatus of claim 5, wherein the control unit is further configured to, after collecting the engine oil temperature value and the crankcase pressure value in real time while the engine is running:
And when the engine oil temperature value is lower than a set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
7. The apparatus of claim 5, wherein when no crankcase pressure sensor is mounted on the engine, the oil-gas separator control apparatus further comprises:
The acquisition unit is used for acquiring the engine oil temperature value and the vehicle driving mileage in real time when the engine runs;
The control unit is used for adjusting the motor rotation speed of the oil-gas separator to the maximum motor rotation speed when the engine oil temperature value is not lower than a set temperature value and the vehicle driving mileage is greater than a set mileage;
and when the engine oil temperature value is not lower than a set temperature value and the vehicle driving mileage is not greater than a set mileage number, dynamically controlling the motor speed of the oil-gas separator based on the second control parameter related to the engine speed and the torque and the maximum value of the motor speed of the oil-gas separator.
8. The apparatus of claim 7, wherein the control unit is configured to, after acquiring the engine oil temperature value and the vehicle mileage while the engine is running, in real time:
And when the engine oil temperature value is lower than a set temperature value, regulating the motor rotation speed of the oil-gas separator to the maximum value of the motor rotation speed.
9. A diesel engine, characterized in that it comprises an electronic control unit, an engine, a crankcase, an oil-gas separator, wherein when the engine is running, the electronic control unit performs the steps of the method according to any one of claims 1-4, dynamically controls the motor speed of the oil-gas separator, and separates the gas in the crankcase according to the adjusted motor speed.
10. A computer readable storage medium, characterized in that it comprises a program code for causing a diesel engine to perform the steps of the method according to any one of claims 1-4, when said program code is run on said diesel engine.
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| CN202411217570.6A CN119195880B (en) | 2024-09-02 | 2024-09-02 | Oil-gas separator control method, device, equipment and storage medium |
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| SE522473C2 (en) * | 2002-06-20 | 2004-02-10 | Alfa Laval Corp Ab | A method and apparatus for purifying crankcase gas |
| DE102019212394A1 (en) * | 2019-08-19 | 2021-02-25 | Volkswagen Aktiengesellschaft | Method for operating an active oil separator and device for separating oil |
| CN217681921U (en) * | 2022-07-28 | 2022-10-28 | 青岛安盛信达汽车技术有限公司 | Oil-gas separator |
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